This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A048938 #17 Feb 16 2025 08:32:40 %S A048938 10025010,10042510,10052010,10052064,10081260,10102252,10124352, %T A048938 10124757,10127475,10128235,10129900,10133788,10134985,10149750, %U A048938 10165680,10165815,10166350,10173820,10185934,10192248,10195794 %N A048938 8-digit vampire numbers (definition 2). %D A048938 C. A. Pickover, "Vampire Numbers." Ch. 30 in Keys to Infinity. New York: Wiley, pp. 227-231, 1995. %H A048938 Sean A. Irvine, <a href="/A048938/b048938.txt">Table of n, a(n) for n = 1..3228</a> %H A048938 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/VampireNumber.html">Vampire Number</a>. %Y A048938 Cf. A014575, A048933, ..., A048936. %K A048938 nonn,fini,full,base %O A048938 1,1 %A A048938 _Eric W. Weisstein_